Oassius m



(No Model.) I

'TOOTH GROWN.

- No. 277,940. I Patented May 22,1883.

UNITED STATES PATENT OFFICE.

OASSIUS M.. RICHMOND, OF NEW YORK, N. Y., ASSIGNOR TO THE RICHMOND TOOTHGROWN COMPANY, OF SAME PLACE.

TOOTH-CROWN.

SPECIFICATION forming part of Letters Patent No. 277,940, dated May 22,1883.

Application filed December 1. 1882. (No model.)

To all whom it may concern:

Be it known that I, CASSIUS M. RICHMOND, of the city, county, and Stateof New York, have invented a new and useful Improvement in Tooth-Crowns,of which the following is a full, true, and exact description, referencebeing had to the accompanying drawings.

Tooth-crowns have heretofore been prepared 7 by inserting in theporcelain a double-headed pin, generally of small diameter, and attachedonly to the tooth by its increase of size at its head.

My improvement consists in the peculiar.

fastening devices constructed as fully set forth hereinafter andclaimed, and placed on the top and back of porcelain teeth, therebyenabling such porcelain teeth to be firmly held in position on theirsupports.

My invention will be readily understood from the accompanying drawings,in which Figure 1 represents a front viewfand Fig. 2 a back view,,of atooth-crown so prepared; Fig. 3, a view of the fastenings arranged to besoldered, and Fig. 4 a section through Fig. 2 on the line 00 w.

My artificial toothcrown' is prepared as follows: Metal ribbons orstrips are bent into the form shown in Fig. 4. Two of these, ."A and B,are then placed in situation in the paste before baking. These stripsshould not be bent close together throughout their entire length, butshould have aloop at their doubled end, as is shown in Fig. 4:. beenbuilt up around these bands or holders, the porcelain tooth is to bebakedin the usual way, and when removed will present the appearanceshown in Figs. 1 and 2. When desired for use the strips may be bentdown,as shown in Fig. 3, in which condition they are readily fastened by theinvesting solder when the tooth-crown is to be placed in situation, theupper pin in this case serving to'prevent the down ward motion of thetooth-crown, which is very liable to occur in case of only one holdingdevice.

Whatl claim as my invention, and desire t secure by Letters Patent, is-

The combination of an artificial porcelain tooth with two holdingdevices consisting of flat strips of metal bent double to form loops atthe inner ends, one of said holding devices projecting at the-top andthe other at the back of said artificial crown, substantially asdescribed.

C. M. RICHMOND.

Witnesses:

GEO. H. EVANS, ANTHONY GREF, Jr.

The paste having

